According to the Washington Examiner, DC Transportation officials will be closing certain lanes of the 3rd, 9th, and 12th street tunnels between 7pm and 5am. Cleaning crews will be scrubbing those tiles that line the tunnels, but don’t expect a drastic change in color – underneath all of that dirt and grime are shiny yellow colored tiles.

Apparently, the tunnels are cleaned and inspected every month. But, for some reason, the cleaning is getting a lot of publicity this week. The work will last from August 15 to August 25.